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Electrical connections – JULABO SC 2500w Eco-Series Recirculating Coolers User Manual

Page 40

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Electrical connections

40

11. Electrical connections

Notice:

Use shielded cables only.
The shield of the connecting cable is electrically connected to the plug housing.
The unit ensures safe operation if connecting cables with a maximum length of 3 m are
used. The use of longer cables does not affect proper performance of the unit, however
external interferences may have a negative impact on safe operation.

9

6

5

1

RS232C

RS232 serial interface
This port can be used to connect a computer with an RS232 cable for
remote control of the circulator.

Pin assignments RS232:

Pin 2

RxD

Receive Data

Pin 3

TxD

Transmit Data

Pin 5

0 V

Signal GND

Pin 7

RTS

Request to send

Pin 8

CTS

Clear to send


Pin 1; 4; 6, 9 Reserved - do not use!


Accessories: Order

No.

Description

8 980 073

RS232 interface cable 9-pol./9-pol. , 2,5 m

8 900 110

USB interface adapter cable


Control connector

Return flow safety device.

If the liquid levels in the recirculating cooler and the external system are
at different heights, overflowing must be prevented after the power has
been turned off. For this reason, solenoid valves for loop circuit can be
integrated in the loop circuit.

The control output is not powered in the OFF condition.
Output voltage: 230 V

 / max. 0.1 A

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